Outage in Claude

Elevated error rates on Claude Opus and Sonnet 4.6

Resolved Major

March 20, 2026 - Started 5 days ago - Lasted about 2 hours
Official incident page

Incident Report

Summary AI Generated

Claude experienced elevated error rates affecting both Opus and Sonnet 4.6 models for 1.5 hours, impacting claude.ai, the developer console, and API services. The team identified the underlying issue and gradually restored service, with Opus 4.6 returning to normal first followed by full resolution of errors across both models.

We are currently investigating elevated error rates affecting Claude Opus 4.6. Our team is actively working to identify the root cause.

Components affected

Claude claude.ai Claude console.anthropic.com Claude api.anthropic.com

Latest Updates ( sorted recent to last )

RESOLVED 5 days ago - at 03/21/2026 01:42AM

This incident has been resolved.

IDENTIFIED 5 days ago - at 03/21/2026 12:58AM

We have observed success rates return to normal for Claude Opus 4.6, and are working to fully resolve elevated errors for Claude Sonnet 4.6.

IDENTIFIED 5 days ago - at 03/21/2026 12:17AM

We have identified an issue resulting in elevated errors on both Claude Opus and Sonnet 4.6, and are working to resolve this issue as quickly as possible.

INVESTIGATING 5 days ago - at 03/21/2026 12:07AM

We are currently investigating elevated error rates affecting Claude Opus 4.6. Our team is actively working to identify the root cause.

Latest Claude outages

Elevated errors on Claude Opus 4.6 - about 4 hours ago

Elevated Errors on claude.ai - about 6 hours ago

Elevated errors on Claude Opus 4.6 - about 10 hours ago

Elevated errors on Claude.ai [retroactive] - 2 days ago

Claude.ai and Claude login down - 3 days ago

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